And monroe e



e. M. CAUSEY ETAL PIPE cuTTEh Original Filed March 1, 1926 4 Sheets-Sheet 1 Dec. 18, 1928. 1,695,363

F/ii- /7-' INVENTORS ATTO R N EY G. M. CAUSEY ET AL PIPE CUTTER Original Filed March 1926 4 Sheets-Sheet 2 Dec. 18, 1928. 1,695,363

-- X A lflfl INVENTORS ATTO H N EY Dec. 1s; 1.928. 1,695,363

G. M. CAUSEY ET AL PIPE CUTTER Original Filed March 1, 1926 4 SheetS-Sheet 5 INVENTORS ATTORN EY G. M. CAUSEY ET AL P IPE CUTTER F/E. M7.

F/EE- M2 MM INVENTORS ATTOR N EV Patented Dec. 18, 1928.

GUY M. CAUSEY, OF SALEM,

OREGON, AND MONROE E. MILLER, OF WASHINGTON,

DISTRICT OF COLUMBIA.

PIPE CUTTER.

Original application filed March 1, 1926, Serial No. 91,524. Divided and this application filed July 10, 1926. Serial No. 121,675.

The present invention relates to pipe cut" operate the machine. Said motor is secured ters, and aims to provide novel and useful improvements in such devices, this application being a division of the application. filed March 1, 1926, Serial No. 91,521.

It is the object of the invention to provide a novel and improved pipe cutter having eutting bits or members which are automatically projected and retracted when they are rotated around the pipe. or other object to be cut,so as to be automatically moved into and out of engagement with such pipe or object. 7

With the foregoing and other objects in view, which will be apparent as the description proceeds, the invention resides in the construction and arrangement of parts, as hereinafter described and claimed, it being understood that changes can be made within the scope of what isclaimed, without departing from the spirit of the invention.

The invention is illustrated in the accompanying drawings, wherein' Figure l is a rear view of the machine, showing the casing or body in intermediate position, and illustrating the cutting and threading positions thereof in dotted lines.

Fig. 2 is a horizontal section on the line 2-2 of Fig. 1,portions being shown in plan.

Fig. 3 is a vertical transverse section on the line 3-3 of Fig. 2 looking rearwardly.

Fig. 4 is a. vertical transverse section on the line H of Fig. 2 looking forwardly.

Fig. 5 is a vertical longitudinal section on the line 5-5 of Fig. 1, portions being shown in elevation.

Fig. 6 is a section on the line 6-6 of Fig. 5 illustrating the pipe clamp or vise.

Fig. 7 is a horizontal section on the line 7-7 of Fig. 4, portions being shown in plan.

Fig. 8 is a top view illustrating the controlling means.

Fig. 9 is a sectional detail on the line 9-9 of Fig. 2.

Fig. 10 is a. diagrammatical view to illustrate the electrical circuits and devices of the controlling means.

In carrying out the invention there is provided a casing or body 11 having the removable back wall 12 for access to the interior parts, and said casing is mounted for oscillation on a. horizontal longitudinal shaft 13 which, as shown, is the armature shaft of an electric motor lit that furnishes the P I t0 within the casing 11. The protruding front and rear terminals Of'tllG shaft 13 are jour-' naled in hearings or pedestals 15 and 16, respectively, rising from a base 17 which may be supported on a bench, table or other suitable support.

The front pedestal 15 has an upwardly extending bracket 18 carrying the pipe clamp or vise 19 to receive and hold the pipe or red 20 in the proper position for the operation of the cutter and threader on the rear portion of the pipe. The clamp 19 maybe of any suitable construction. As shown, it comprises a yoke 21 having upper and lower sections hingedly connected at one side, as at 22, with the lower section secured on or integral with the bracket- 18. The sections of the yoke are detachably connected at the opposite site by a latch or hook 23. Clamping blocks 24: and 25 are slidable in the lower and upper sections of the yoke 21, respectively, and a screw 26 is threaded through the upper portion of the yoke and is swivelled'to the upper block 25 for raising and lowering it. The blocks 24 and 25 have toothed or serrated Vshaped notches or recesses 27 to receive and grip the pipe or rod 20 so as to center said pipe and secure it in the proper position for the operation thereon of the pipe cutter and the threader. The blocks 24 and 25, especially the block 2 1, may be used interchangeably with other blocks for different sizes of pipes, and the several pairs of blocks may have notches or recesses 27 of different sizes for pipes of different diameters. In this way, quick adjustments may be made for pipes of different diameters and such pipes will all be accommodated with their axes in the same line so as to properly register with the pipe cutter and the pipe t-hreader. The pipe clamp or vise may also be used for holding a pipe 01' other object to be operated on for other purposes than cutting and threading by the present machine, inasmuch as such clamp or vise may be handy for other purposes and may eliminate the necessity for a separate pipe clamp or vise.

The pipe cutter 28 includes a tubular shaft 29 of sufficient diameter to receive the largest diameter of pipe for which the machine is intended, and the rear terminal of the shaft 29 is journaled in a bearing 30 with which the back wall. 12 i p vid a. sleeve 81 end with a disk he rotatable on the shaft 29 near .thelforxl ard endthereot and is journaled for rotation in a hearing 32 with which the front wall of the easing;- 11 is piovided. The sleeve 31 has a disls: 33 at its forward end provided with a forwardly extending rim or fiance 34 against whicha dish 1' plate 35 is detachably secured and provided with, a central opening; registering with the opera e the shalt-E29. The disk or plate 35 has '1' .l'ial grooves ,86 in its rear or inner side,in which cutter hits or mam "s 37 are slidahle to he projecti' jd into and retracted lron'i the open inf Of the shaft 29am batter; head. -The inner ends of the h 37 are shar ie'red so as to out the pine 'efnc anatl'ie hoi's '37 are aaro maa'caily projected inwardly and retracted outwardly by the relative lot-at'ion oii' the shat't 29 and sle eve ll. For this purpose, the shaft 29 is tidied at its forward A v eeh the disks and 35 and rotatablerelatively to the and Said disk 38 l' 'ass pl'rally ea ending slots 40 receiving pins or lugs 39 on the hit; 37, w lore-by the relative rot: "on of "the d ibl; 3 8 with reference to the disks and 35 wil slide the hits a? measly are tuaeany. Thecutter head comprising the disks 33, 35 m di-38 and bits 37 is located in fro-abet the casing 11 with -the axis "o-t said head and shaft 23 horizontal and 'parallel with the shaft 13. Gear wheels 41 and 42 ot-sli ghtlyditierent diameters are} secured on the shaft 529 and Sleeve 31 within the casing 11and mesh with a douhle diainetered pinion 43 niohnted r0;-

rotation in the casing, in order that the sleeve 31 will rotate a sl ghtly ditl'crent speed than the shaft 29 so as to oro'ect and re- V 1 1 I 1291s rotated tract the b11380! when the s 7 I in opposite directions. ji' worin wheel t secured on the'sh 29 adjacent to the 1) wall 12 1iOl1'{)-i1tlng said at as inafter more "fully appear. v I V The pipethrcader 45 is disposed with its axis par lilel to the tLXlS of the pipe cutter andtheagxis of the shaft 1;), with the p pecutter fa'neljaipe threader disposed side by s le.

The pipe tlireaderincludes a hollowcylindri-' cal screw lfihaxdng theinturned toot! ed portiojnsd'? at its forwardend; constitut' the threading the. The screw ati'is srlea tl'n'ozuh ed withina sleeve 218 the list d remot ably in a bearing 49 wit h WlllCl'l the casing llis formed, said sleeve 48 being read ly slid i earwardly into the hoaringat and'said bearing carrying a set screw 50 or other means for clamping the sleeve iii-place. The threading die 17 may be user interchangeably with other dies for pipes of different diameters. Thus, screws -16 having; dies of different may he usedinterchangeably, and'each screw has a sleeve 8, with the s r w thread between the screw and sleeve of the same pitchflas tllQllllilQgQl of the die all Thus,

y when the screw 46 is rotated in the sleeve it will be projected and retracted so that the die t? will. move properly on the pipe.

In order to rotate the screw 46 it is'pro' 'Vided at its rear end with an .aperture' 51 or non-circular form slidahly re ceiving the forward terminal 52 ot a shaft 53:, sand terminal 52 being of square or non circular cross-section so that the screw d6 1 trill rot-ate with the shalt, and per-stating the bonding with the worm Wheel 44,

53 between the screw V "v y and secured on the corresponchn'g ah'i'iin'g the worm wheels. Clutch members- 6O Q 61 are slidahle on and rotatable with theirssf' ctive shafts 5S and 59 11161 areen 'agealole ithtlie fclut'ch huh 620T a worm he'el 63 jonri'ialejd in the casing h'etween the shafts 58 and 59. Said 'worm -hee'l 63 worn} 64: secured ont he drive shaft 1 the clutch nieinhers'tif) and 61 are into engagement with the clutch h sha'lfts 58 and 59 are connected wftl'i the -niotor 1 1 for driving the pipe 'cutt'er aiul pipe threader respectively.

Adjustable stops, such assc'i'e'ws '65, are carried by the base 17 for 't -he Contact otthe bottom of the casing 11in order, to hinit the oscillatory movement of said casing fwhen swun to cutting; and threading) position.

The casing 11 is slidab'le roarwardly on the base, the shaft 13 being slida inthe pedestals 15 and 16, and 2111-1111 wardly eyitendi'n ghandlever '66 is 'fulcruined, as at 6?, to the rear wall 12 of the casing ad jacent tothe shaft 13, and has a spherical roller 68 at its lower-en d hearing; forwardly against an abutment 69.1ugstandinh; from the base. tending lugs or arins 7O hetween which the lever 66 extends, inorderthatthecasing'will oscillate transversely "with the lever. A coiled spring Hem-rounds the Shift 13am is confined hetweentl'ie pedestal 16 and the 935+ ing', to normally move the casing forwardly. By swingingthe lever'tlo rearwardly, the casing'is shifted rearwardly. r V i The rear terminal of the shaft v13 has a square or non-circular portion 72 for the engagen ent of a crank or other implement for manually operating}; sired, such as when tllGIllOtOl fails. I

The clutches for connecting the cutter'ahd threader with the motor are controlled elec trically as shown. Thus, as senin Fig; '7,

the el ctric curreiit tor rwardly and The rear wall 12 has rearwardly the machine, when do for the cutter and threader.

levers 73 and 74 are fulcrumed within the casing 11 and have suitable connections with the clutch members 60 and 61,-respectively, and the cores 75 and 76 of solenoids 77 and 7 8, respectively, are connected with said levers. When said solenoids or electromagnets are energized the levers are swung to move the clutch, members into connection with the clutch hub 62.

The automatic controlling means for the motor 14 and clutch operators, shown in Figs. 8 and 10, comprise the control wheels 80 and 81 for thepipe cutter and pipe threader, respectively. Said wheels are operatively connected with the respective actuating means As shown, the

. wheels 80 and '81 are worm wheels and engage worms 82 to which are secured sprocket wheels 83, and sprocket chains 84 connect the wheels 83 with sprocket wheels 85' secured on theshafts 58 and'59. "The wheels 80 and 81 are located on the top of the casing 11. and the chains 84 extend downwardly from the sprocket wheels 83 to the sprocket wheels 85.

The gear ratio between the shafts 58 and 59 and the wheels 80 and 81, respectively, is'such that forthe maximum movements of the pipe cutter and pipe threaderthe control wheels 80 and 81 will rotate less than a complete revolution, and the limits ofmovement of the pipe cutter and pipe threader-may be regulated, to adjust the movement of the pipe cutter to the diameter of the. pipe being cut,

and to adjust the movement of the pipe threader according to the length of the portionof the pipeto be threaded.

Arms 86 and 87 are mounted to turn on the In the arrangement as shown, the motor 14 is a reversible motor, and is controlled by a reversing switch 94 having a control lever 95 forming or provided with an armature located between the opposing electromagnets 96 and 97. The wires or conductors 98 and 99 of the electric power circuit are connected through the switchl94'with the field coil and armature of the motor 14, and the motor is stopped when the lever 95 is in its normal intermediate or neutral position. When the lever 95 is attracted by the energized magnet 96, the motor will operate in one direction, whereas when the armature lever 95 is attracted by the energized magnet 97, the motor is operated in the opposite direction.

Push buttons or other suitable switches 100 and 101 are carried by the casing 11 for starting'the operation of the pipe cutter and pipe threader, respectively. The remaining elements of the electrical control will be described in connection with the operation of the machine. 7

In operation, when a pipe is to be cut, the casing 11 is swung to cutting position C, as seen in Fig. 1, which will bring the pipe cutter 28 into registration and alinement with the clamp or vise 19. The pipe is then inserted in the clamp and cutter, and may extend completely through the shaft 29. The cutting bits or members 37 are normally retracted so as not to interfere'with the introduction of the pipe into the cutter. The operator then touches the push button switch 100, which will start the operation of the pipe cutter, and no further attention on the part of the operator is required until the operation has been completed. When the switch 100 isclosed this completes a circuit including the conductor 98, a conductor 102, switch 100, a conductor 103, an electromagnet'104, a conductor 105, solenoid 77, a conductor 106, and conductor 99. The solenoid 77 is therefore energized to move the clutch member 60 into engagement with the clutch hub 62, thereby connecting the pipe cutter with the motor. The magnet 104 controls a switch 107 which is normally open, sothat said switch is closed when said magnet 104 is energized by the closing of the switch 100. The switch 107 being closed completes a circuit including the conductor 98, a conductor 108, magnet 96, a conductor 109, a switch 110, switch 107, magnet. 104, conductor 105, solenoid 77, and conductors 106 and 99. j The magnet 96'moves the lever 95 and operates the switch 94 to connect the motor 14 with the conductors 98 and 99, so as to rotate the motor in one direction, and this will rotate the shaft 29 in the proper direction to cut the pipe, the solenoid 77 being kept energized so as to hold the clutch closed between the motor and shaft 29. The shaft 29 being rotated will, through the gear wheels 41 and 42 and pinion 43,rotate the sleeve 31.

The-bits 37 are rotated with the disks 33 and-35, clockwise as seen in Fig. 3, and said disks rotate slightly faster than the disk 38, in view of the slight difference in speed between the shaft 29 and sleeve 31. Therefore,

'as the cutter head rotates the pins 39 are made to move along the slots 40 of the disk 38, which will force the bits 37 inwardly Thus, it there is a piece 05' p so asto; close a, switch 113 between, con

duotors-112aand 1 1 4, in order to reverse thel operation: ot the cutter-end retmct the bits 37; thereof. When the SWltC-h 113 lELClOFlGQl, by the contact o-f .the peg; 98 vsuth; the arrrr 86, a circuit is completed includingthe co r.-

doctor 98, a conductor 1111, magnet 97,, convductor 112;, switch 113, conductor 11 4, electromagnet- 11j5,cont rol-l-ing switch; 1,10, conductor L05, solenoid- 7.75,. conductor 106, and conductor 99. The magnet 115 being,-

energ'ized will opem the switch. 1110, thereby opening-- the circuit of. the magnet 96 but the soljenoidfl'f, is kept energized. Tlfhemeg;

net 97 being-energized will attlaect the lev er' 9 5.1a nd reuersethe switch Qehsofls to reverse;

the motor lit; The motoris therefor-e, op

eratedtorotatethe pipe cutter ,in. the oppo: sitedirectiou, and naturally the bits 37, will, be retracted. During this reverse or; reset-. ting movement of thepipe Cdb CGL,l1ll control heel rotates clockwise, as seen in Figs.

8' and 1.0-, so that the peg; 93' moves away from, andthe peg 92 moves toward theurm, 86,,

Said arm remains. in, either positiouby fries tgion, so, that the. SWltGll: 711.3 rema ns closed hile the p pe cutter: is returned to.

initial, position -.4 When the bits 3'7 have been,

retracted; trom' the pipe; the peg 92, which,

, has been adjusted; to; a suitable position, on,

the Wheel 88,, contacts. with the erm 86} and moves said, erm to open the switcl llifi. This. well open/the (3111011113; of the magnet 9, 7, and,

solenoid 7,7,, thereby. stopping. the motor 141,

and opening the clutch; between the; motor:

midi/pipe cutte g, thereby completingthe. op

ing; the insertion of the next pipessto be cut.

29, the next pipe when inserte- "through the.

clempv 19- and into, the 29 will d-is lodge the piece-of pipethrough the rear end of theshuft 29; or such piece-111513 be removed previously by the operetou,

When; thep e held by the clamp 19 is to bo threeded, iii-o'er-the-opesatiou oi, the pipe cutter as atforesmid, the lever 66 isvswu 11g; rem Wardly, thereby shii 'ti g the casing 11 rear,- Ward-ly, so as: to; Withdraw the cutter head from the end of; the pipe, ndtbe lever 66 is their swungto tilt the cee l; from outtii g-positionito threading posi; 11 '3, as seen; in. Eign 1 This; brings thegpip threeder iutoregistua-tion end alizuen'zent u h thepipe. The operator; then touches the push; lmtton switch; 101, ar d the controlof the pipe threeder is; similau to the; control; of: the: pipe cutter; above.- described. Thus, when the switch r01 18 closed this cempiletese; circuit including the conductoii e concluctor 1116,,

in the shagtt;

s; h ut h. mem e 61: int nga me twitli. the clutch( hub; 62., i The switch 1213 con; trolled by the magnet 11- 8 is, closed, theueby completing a circuit including t-lQQr GQHdHQEQI 98; ndue enlmag et- 97,1 1; eenduet r, 2 Y

a, switch 123, switch; 121-, magnet 1,1 8,, a con;-v

d-uctou 11,9, solenoide78, conductor l20iauder conductor 9,9, Tghedever 9 5,ismoved by the.

magnet 97 temperate-the motor llflsin the correspogoding direction, thereby rotating, th shaft 53- Thi wilirretete' t Se m-4G n; one direction so asto move the soeevw for- 1 wardly and, theith geeglihg die 4H7, moves, overt the end oft theipipee nd cuts-theth uee d there.

n, Thedistencehat e, e 7 es n. the pipe is deteumined, the fpositiom o-t-the peg, 91 on the Wheel 81,. Ihe wheel 81 moves counter lockwise, es; seeuimFigs. Stand 10; r

s i h ieM; is being m e orwerd yont e p p W en, the peg, contacts with h m, 8 it otesi e mi e-c ose e swi c 2 e v me e nsieni lpcte c ir uit e eluding h en uc r "9 .,=GQ ldi 1Q Q3 mas? newt, on uc or 2. 4, sw tch 125a c nduct 2 e ec iiemegnetlfii ee tnel ingl sw h 125, @n u r -1}9, solenoid 7 8 cenducteri 120 and co.,l1du-etor\99,. The switch is therefore openedtoiopen theoireuit 0t themaggget,

97, but the solenflil: 55 isr-lt'gpt energised to hold the w eesmn iegq utch-1 e es ds The; magnet 96 is energjuedPto'revensethesmitgh;

4: and motor 13 5 here y: rotat ng the sh f 53' endz screw- 456: in the opposite: digeetiom, in

order retract the: threading; diewt? and resetthepipe threarlerg, Eueingsuch; return- 1 movement the! Wheel 81, rotates- QlQQkWlSe,; as; seen; in- Eigs. 8i and; 10;, thereby moving; the V peg 9.1- zmva-y from and the;pegeQOdoWerdthfi with theswitch 125 closed; Ellen the pipe; threeder has been retulmed, do: initial! orfinor mal; position, the peg contacts. wi-tluand? swings the arm 87 to open the: switch 1:2 5,1;

thereby. 'deenergizi ng; the magnet, and

solenoid 78, tostop; the motor Meefldopenthe cljutohbetweeir tliemotor and pi pothreads l the machine: may; be used.

If desi exclusivelyiror threading; pipes by leaving;- the casings lglgdfi threading position replace, mg; the p pes: in the clamp, 01: vise: 19': By ClliflLIlQlllrtllG: POSltflbIltOZfi'th: peg; 911% it is 5 pos-fl si ble to control-the longitudinal movement of? the screw, firand threading die 457F170 cut: the

thread on thepip'eto';d :idiier.ent -'distances f-ron1-- the: end; 0.1 the-; pipe, withihe thelimit on fore i ward: movement otthex screw; when, prole jectecl tromit'he casing.

The pipe: cutter; will: operazte'e on pipes; off

different diiemetersand: the sleeve efiz mey bei readily withdrawn'from the casing to be sub stituted by a sleeve containing a screw anddie for pipes of different diameter, and the clamp or vise 19 may also be quickly adjusted for pipes of different diameter.

The gears and parts within the casing 11 may run in oil, and the bits 37 and cutting die 47 may be supplied with oil to facilitate the cutting and threadingof the, pipe and to reduce'friction and heat.

As shown, the controlcwheels 80 and 81,

motor reversing switch 94, and magnets 96, 97, 104, 115, 118 and 127 are located on the top of the casing 11 Within a surrounding flange 128, and a cover 129 seats on said flange over said parts and is hinged, as at 130, so that it may be swung open for adjusting the pegs 90, 91, 92 and 93.

Having thus described the invention, What rotatable on said shaft, cooperable members on the outer ends of the shaft and sleeve on the exterior of the casing, a cutting member slidable radially in one of said members, the other member having a spiral slot engaging said cutting member to move the cutting member radially by the relative rotation of said shaft and sleeve, and gearing within the casing connecting said shaft and sleeve to rotate them at different relative speeds.

In testimony whereof we hereunto aflix our GUY M. CAUSEY. .MONROE E. MILLER.

P signatures. 

